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Homework Help: Wave speed in a brass wire

  1. Jun 14, 2008 #1
    1. The problem statement, all variables and given/known data

    What is the wave speed in a brass wire with a radius of 3.35×10-4 m stretched with a tension of 120 N? The density of brass is 8.60×103 kg/m^3.

    2. Relevant equations

    v = [tex]\sqrt{\frac{T}{\mu}}[/tex]

    3. The attempt at a solution

    I have no clue about this problem. It gives me regular density but i need linear density in order for the formula to work and i don't know how or if i even can convert reg density to linear. Nor can i find any other relevant equations that would clear it up for me.

  2. jcsd
  3. Jun 14, 2008 #2
    Hi K3nt70.
    Try find the cross-sectional area of the string and see if you can see what to do then.
  4. Jun 14, 2008 #3
    Wicked - got it all worked out. Thanks for the hint!
  5. Jun 14, 2008 #4
    Its cool, no problem.
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